WO2003045924A1 - Derives d'aryle-1,4-pyrazine substitues - Google Patents

Derives d'aryle-1,4-pyrazine substitues Download PDF

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WO2003045924A1
WO2003045924A1 PCT/US2002/033642 US0233642W WO03045924A1 WO 2003045924 A1 WO2003045924 A1 WO 2003045924A1 US 0233642 W US0233642 W US 0233642W WO 03045924 A1 WO03045924 A1 WO 03045924A1
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Prior art keywords
dichlorophenyl
amine
diethylpyrazin
dihydro
inden
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PCT/US2002/033642
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English (en)
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Patrick R. Verhoest
Robert L. Hoffman
Jeffrey W. Corbett
Michael D. Ennis
Kristine E. Frank
Jian-Min Fu
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Pharmacia & Upjohn Company
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Priority to MXPA04004714A priority Critical patent/MXPA04004714A/es
Priority to AU2002343557A priority patent/AU2002343557A1/en
Priority to DE60234269T priority patent/DE60234269D1/de
Priority to DK02780507T priority patent/DK1446387T3/da
Priority to AT02780507T priority patent/ATE447561T1/de
Priority to CA002467870A priority patent/CA2467870A1/fr
Priority to BR0214309-7A priority patent/BR0214309A/pt
Priority to EP02780507A priority patent/EP1446387B1/fr
Publication of WO2003045924A1 publication Critical patent/WO2003045924A1/fr

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    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D401/00—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom
    • C07D401/02—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings
    • C07D401/04—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings directly linked by a ring-member-to-ring-member bond
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P25/00—Drugs for disorders of the nervous system
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D241/00—Heterocyclic compounds containing 1,4-diazine or hydrogenated 1,4-diazine rings
    • C07D241/02—Heterocyclic compounds containing 1,4-diazine or hydrogenated 1,4-diazine rings not condensed with other rings
    • C07D241/10—Heterocyclic compounds containing 1,4-diazine or hydrogenated 1,4-diazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members
    • C07D241/14—Heterocyclic compounds containing 1,4-diazine or hydrogenated 1,4-diazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
    • C07D241/18—Oxygen or sulfur atoms
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D241/00—Heterocyclic compounds containing 1,4-diazine or hydrogenated 1,4-diazine rings
    • C07D241/02—Heterocyclic compounds containing 1,4-diazine or hydrogenated 1,4-diazine rings not condensed with other rings
    • C07D241/10—Heterocyclic compounds containing 1,4-diazine or hydrogenated 1,4-diazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members
    • C07D241/14—Heterocyclic compounds containing 1,4-diazine or hydrogenated 1,4-diazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
    • C07D241/20—Nitrogen atoms
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D241/00—Heterocyclic compounds containing 1,4-diazine or hydrogenated 1,4-diazine rings
    • C07D241/02—Heterocyclic compounds containing 1,4-diazine or hydrogenated 1,4-diazine rings not condensed with other rings
    • C07D241/10—Heterocyclic compounds containing 1,4-diazine or hydrogenated 1,4-diazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members
    • C07D241/14—Heterocyclic compounds containing 1,4-diazine or hydrogenated 1,4-diazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
    • C07D241/24—Carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals
    • C07D241/26—Carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals with nitrogen atoms directly attached to ring carbon atoms
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D401/00—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom
    • C07D401/02—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings
    • C07D401/12—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings linked by a chain containing hetero atoms as chain links
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D401/00—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom
    • C07D401/14—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing three or more hetero rings
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D403/00—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group C07D401/00
    • C07D403/02—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group C07D401/00 containing two hetero rings
    • C07D403/12—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group C07D401/00 containing two hetero rings linked by a chain containing hetero atoms as chain links
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D405/00—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom
    • C07D405/02—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom containing two hetero rings
    • C07D405/12—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom containing two hetero rings linked by a chain containing hetero atoms as chain links
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D409/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms
    • C07D409/02—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms containing two hetero rings
    • C07D409/12—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms containing two hetero rings linked by a chain containing hetero atoms as chain links
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D491/00—Heterocyclic compounds containing in the condensed ring system both one or more rings having oxygen atoms as the only ring hetero atoms and one or more rings having nitrogen atoms as the only ring hetero atoms, not provided for by groups C07D451/00 - C07D459/00, C07D463/00, C07D477/00 or C07D489/00
    • C07D491/02—Heterocyclic compounds containing in the condensed ring system both one or more rings having oxygen atoms as the only ring hetero atoms and one or more rings having nitrogen atoms as the only ring hetero atoms, not provided for by groups C07D451/00 - C07D459/00, C07D463/00, C07D477/00 or C07D489/00 in which the condensed system contains two hetero rings
    • C07D491/04—Ortho-condensed systems
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
    • G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
    • G01N33/74—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving hormones or other non-cytokine intercellular protein regulatory factors such as growth factors, including receptors to hormones and growth factors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2333/00—Assays involving biological materials from specific organisms or of a specific nature
    • G01N2333/435—Assays involving biological materials from specific organisms or of a specific nature from animals; from humans
    • G01N2333/575—Hormones
    • G01N2333/5751—Corticotropin releasing factor [CRF] (Urotensin)
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2500/00—Screening for compounds of potential therapeutic value
    • G01N2500/02—Screening involving studying the effect of compounds C on the interaction between interacting molecules A and B (e.g. A = enzyme and B = substrate for A, or A = receptor and B = ligand for the receptor)

Definitions

  • This invention relates to substituted aryl 1 ,4-pyrazine derivatives and processes for preparing them, pharmaceutical compositions containing them, and methods of using them to treat a disorder or condition which can be effected or facilitated by antagonizing a CRF receptor, including but not limited to disorders induced or facilitated by CRF, such as anxiety disorders, and depression and stress related disorders. Additionally this invention relates to the use of such compounds as probes for the localization of CRF ⁇ receptors in cells or tissues.
  • Corticotropin releasing factor is a 41 amino acid peptide that is the primary physiological regulator of proopiomelanocortin (POMC) derived peptide secretion from the anterior pituitary gland [J. Rivier et al., Proc. Natl Acad. Sci (USA) 80:4851 (1983); W. Vale et al., Science 213:1394 (1981)].
  • POMC proopiomelanocortin
  • CRF CRF plays a significant role in integrating the response in the immune system to physiological, psychological, and immunological stressors [J.E. Blalock, Physiological Reviews 69:1 (1989); J.E. Morley, Life Sci. 41 :527 (1987)].
  • CRF has a role in psychiatric disorders and neurological diseases including depression, anxiety-related disorders and feeding disorders.
  • a role for CRF has also been postulated in the etiology and pathophysiology of Alzheimer's disease, Parkinson's disease, Huntington's disease, progressive supranuclear palsy and amyotrophic lateral sclerosis, as they relate to the dysfunction of CRF neurons in the central nervous system [for a review, see: E.B. De Souze, Hosp. Practice 23:59 (1988)].
  • Anxiety disorders are a group of diseases, recognized in the art, that includes phobic disorders, anxiety states, post-traumatic stress disorder and atypical anxiety disorders [The Merck Manual of Diagnosis and Therapy, 16 th edition (1992)]. Emotional stress is often a precipitating factor in anxiety disorders, and such disorders generally respond to medications that lower response to stress.
  • CSF cerebral spinal fluid
  • the concentration of CRF is significantly increased in the cerebral spinal fluid (CSF) of drug-free individuals [C.B. Nemeroff et al., Science 226:1342 (1984); CM. Banki et al., Am. J. Psychiatry 144:873 (1987); R.D. France et al., Biol. Psychiatry 28:86 (1988); M. Arato et al, Biol. Psychiatry 25:355 (1989)]. Furthermore, the density of CRF receptors is significantly decreased in the frontal cortex of suicide victims, consistent with a hypersecretion of CRF [C.B. Memeroff et al., Arch. Gen.
  • CRF has also been implicated in the etiology of anxiety-related disorders, and is known to produce anxiogenic effects in animals. Interactions between benzodiazepine/non-benzodiazepine anxiolytics and CRF have been demonstrated in a variety of behavioral anxiety models [D.R. Britton et al., Life Sci. 31:363 (1982); C.W. Berridge and A.J. Dunn Regul Peptides 16:83 (1986)].
  • CRF ⁇ antagonists for the treatment of Syndrome X has also been described in U.S. Patent Application No. 09/696,822, filed October 26, 2000, and European Patent Application No. 003094414, filed October 26, 2000, which are also incorporated in their entireties herein by reference.
  • Methods for using CRFj antagonists to treat congestive heart failure are described in U.S. Serial No. 09/248,073, filed February 10, 1999, now U.S. patent 6,043,260 (March 28, 2000) which is also incorporated herein in its entirety by reference.
  • CRF is known to have a broad extrahypothalmic distribution in the CNS, contributing therein to a wide spectrum of autonomic behavioral and physiological effects [see, e.g., Vale et al., 1983; Koob, 985; and E.B. De Souze et al., 1985].
  • CRF concentrations are significantly increased in the cerebral spinal fluid of patients afflicted with affective disorder or major depression [see, e.g., Nemeroff et al., 1984; Banki et al., 1987; France et al., 1988; Arato et al., 1989].
  • compounds of Formula I are CRFj antagonists and are useful in the treatment of disorders and diseases associated with CRFj receptors, including CNS-related disorders and diseases, particularly psychiatric disorders, affective disorders such as anxiety disorders, depression and stress related disorders ,and acute and chronic neurological disorders and diseases.
  • CNS-related disorders and diseases particularly psychiatric disorders, affective disorders such as anxiety disorders, depression and stress related disorders ,and acute and chronic neurological disorders and diseases.
  • the compounds are also useful in smoking cessation programs.
  • this invention provides a compound of Formula I,
  • X is selected from -NR 3 R 4 , -OR 3 , -CR 3 R 5 R 5 , -C(O)R 3 , -S(O) m R 3 , - NR 3 C(O)R 4 , or -NR 3 S(O) m R 4;
  • m is 0,1 or 2;
  • Ar is selected from aryl, substituted aryl, heteroaryl, or substituted heteroaryl;
  • Ri, R 2 , and R 5 are independently selected from halogen, -NO 2) -CN, -R a , -OR a , -S(O) m R a , -NR a R a , -C(O)NR a R a , -C(S)NR a R a -S(O) m NR a R a , -NR a S(O) m R a , - NR a C(O)OR a , -OC(O)NR a R a , -NR a C(O)NR a R a , -NR a C(S)NR a R a , -C(O)OR a , - C(S)OR a , or -OC(O)OR a ; R 3 and R-j are independently selected from R a> heterocycloalkyl, substituted heterocycloalkyl, substituted heteroaryl,
  • Aryl is either phenyl or naphthyl, provided that the compound is not:
  • the present invention provides a novel compound of Formula I, or a stereoisomer thereof, a pharmaceutically acceptable salt thereof, or a prodrug thereof, which are useful for the treatment of the disorders or diseases that are associated with CRFj receptors, or disorders the treatment of which can be effected or facilitated by antagonizing CRF, in a mammal, particularly in a human, such as social anxiety disorder; panic disorder; obsessive-compulsive disorder; anxiety with co- morbid depressive illness; affective disorder; anxiety; and depression.
  • the present invention provides for the use of a compound of the invention for treatment of a disorder disclosed herein above in a mammal, particularly in a human.
  • the present invention provides for a composition comprising a compound of the invention useful for treatment of a disorder disclosed herein above in a mammal, particularly in a human.
  • the present invention provides for the use of a compound of the invention in a binding assay, wherein one or more of the compounds may be joined to a label, where the label can directly or indirectly provide a detectable signal.
  • Various labels include radioisotopes, fluorescers, chemiluminescers, specific binding molecules, particles, e.g. magnetic particles, and the like.
  • the present invention relates to the use of the compounds of the invention (particularly labeled compounds of this invention) as probes for the localization of receptors in cells and tissues and as standards and reagents for use in determining the receptor-binding characteristics of test compounds.
  • Labeled compounds of the invention may be used for in vitro studies such as autoradiography of tissue sections or for in vivo methods, e.g. PET or SPECT scanning. Particularly, compounds of the invention are useful as standards and reagents in determining the ability of a potential pharmaceutical to bind to the CRFi receptor.
  • this invention provides a compound of Formula I, shown and defined above.
  • Compounds provided herein can have one or more asymmetric centers or planes, and all chiral (enantiomeric and diastereomeric) and racemic forms of the compound are included in the present invention.
  • Ar is selected from aryl, substituted aryl, heteroaryl, or substituted heteroaryl; m is 0,1 or 2;
  • Ri and R 2 are independently selected from halogen, -NO 2> -CN, -R a , -OR a , -S(O) m R a , -NR a R a , -C(O)NR a R a , -C(S)NR a R a -S(O) m NR a R a , -NR a S(O) m R a , - NR a C(O)OR a , -OC(O)NR a R a , -NR a C(O)NR a R a , -NR a C(S)NR a R a , -C(O)OR a , - C(S)OR a , or -OC(O)OR a ;
  • R 3 and R are independently selected from R a , heterocycloalkyl, substituted heterocycloalkyl, substituted heteroaryl, substituted aryl, aryl cycloalkyl, substituted aryl cycloalkyl, heteroaryl cycloalkyl, substituted heteroaryl cycloalkyl, aryl heterocycloalkyl, substituted aryl heterocycloalkyl, heteroaryl heterocycloalkyl, or substituted heteroaryl heterocycloalkyl provided at least one of R 3 or t are heteroaryl, substituted heteroaryl, aryl cycloalkyl, substituted aryl cycloalkyl, heteroaryl cycloalkyl, substituted heteroaryl cycloalkyl, aryl heterocycloalkyl, substituted aryl heterocycloalkyl, substituted heteroaryl heterocycloalkyl, heterocycloalkyl or substituted heterocycloalkyl; R
  • R t each is independently selected from H, halogen, -NO 2 , -NH 2 , -OH, -SH, - CN, -C(O)NH 2 , -C(O)-NHalkyl, -C(O)Nalkylalkyl, -Oalkyl, NHalkyl, Nalkylalkyl, - S(O) m alkyl, SO 2 NH 2 , SO 2 NHalkyl and SO 2 Nalkylalkyl, alkyl, cycloalkyl, haloalkyl, phenyl, benzyl, heteroaryl, or heterocycloalkyl where phenyl, benzyl heteroaryl and heterocycloalkyl may be optionally substituted with alkyl or halogen.
  • Ar is selected from aryl, substituted aryl, heteroaryl, or substituted heteroaryl; m is 0,1 or 2;
  • Rj and R are independently selected from halogen, -NO 2> -CN, -R a , -OR a , -S(O) m R a , -NR a R a , -C(O)NR a R a , -C(S)NR a R a -S(O) m NR a R a , -NR a S(O) m R a , - NR a C(O)OR a , -OC(O)NR a R a , -NR a C(O)NR a R a , -NR a C(S)NR a R a , -C(O)OR a , - C(S)OR a , or -OC(O)OR a ;
  • R 3 is selected from heteroaryl, substituted heteroaryl, aryl cycloalkyl, substituted aryl cycloalkyl, heteroaryl cycloalkyl, substituted heteroaryl cycloalkyl, aryl heterocycloalkyl, substituted aryl heterocycloalkyl, heteroaryl heterocycloalkyl, substituted heteroaryl heterocycloalkyl, heterocycloalkyl or substituted heterocycloalkyl;
  • R t each is independently selected from H, halogen, -NO 2 , -NH 2 , -OH, -SH, - CN, -C(O)NH 2 , -C(O)-NHalkyl, -C(O)Nalkylalkyl, -Oalkyl, NHalkyl, Nalkylalkyl, - S(O) m alkyl, SO 2 NH 2 , SO 2 NHalkyl and SO 2 Nalkylalkyl, alkyl, cycloalkyl, haloalkyl, phenyl, benzyl, heteroaryl, or heterocycloalkyl where phenyl, benzyl heteroaryl and heterocycloalkyl may be optionally substituted with alkyl or halogen.
  • Still other preferred compounds of the invention include those of Formula IV
  • Ar is selected from aryl, substituted aryl, heteroaryl, or substituted heteroaryl; m is 0,1 or 2; Ri and R 2 are independently selected from halogen, -NO 2 , -CN, -R a , -OR a ,
  • R s each is independently selected from halogen, -NO 2 , -CN, -R a , -OR a , - S(O) m R a , -NR a R a , -C(O)NR a R a , -C(S)NR a R a -S(O) m NR a R a , -NR a S(O) m R a , -
  • Still other preferred compounds of the invention include those of Formula V
  • R s each is independently selected from halogen, -NO 2> -CN, -R a , -OR a , - S(O) m R a , -NR a R a , -C(O)NR a R a , -C(S)NR a R a -S(O) m NR a R a , -NR a S(O) m R a , -NR a C(O)OR a , -OC(O)NR a R a , -NR a C(O)NR a R a , -NR a C(S)NR a R a , -C(O)OR a , - C(S)OR a , or -OC(O)OR a ;
  • R t each is independently selected from H, halogen, -NO , -NH 2 , -OH, -SH, - CN, -C(O)NH 2 , -C(O)-NHalkyl, -C(O)Nalkylalkyl, -Oalkyl, NHalkyl, Nalkylalkyl, - S(O) m alkyl, SO 2 NH 2 , SO 2 NHalkyl and SO 2 Nalkylalkyl, alkyl, cycloalkyl, haloalkyl, phenyl, benzyl, heteroaryl, or heterocycloalkyl where phenyl, benzyl heteroaryl and heterocycloalkyl may be optionally substituted with alkyl or halogen.
  • Still other preferred compounds of the invention include those of Formula VI
  • Ar is selected from aryl, substituted aryl, heteroaryl, or substituted heteroaryl; m is 0,1 or 2;
  • R s each is independently selected from halogen, -NO 2; -CN, -R a , -OR a , - S(O) m R a , -NR a R a , -C(O)NR a R a , -C(S)NR a R a -S(O) m NR a R a , -NR a S(O) ra R a , - NR a C(O)OR a , -OC(O)NR a R a , -NR a C(O)NR a R a , -NR a C(S)NR a R a , -C(O)OR a , - C(S)OR a , or -OC(O)OR a ; R a each is independently selected from H, alkyl, cycloalkyl, haloalkyl, aryl, heteroaryl, or heterocycl
  • R t each is independently selected from H, halogen, -NO 2 , -NH 2 , -OH, -SH, - CN, -C(O)NH 2 , -C(O)-NHalkyl, -C(O)Nalkylalkyl, -Oalkyl, NHalkyl, Nalkylalkyl, - S(O) m alkyl, SO 2 NH 2 , SO 2 NHalkyl and SO 2 Nalkylalkyl, alkyl, cycloalkyl, haloalkyl, phenyl, benzyl, heteroaryl, or heterocycloalkyl where phenyl, benzyl heteroaryl and heterocycloalkyl may be optionally substituted with alkyl or halogen.
  • Still other preferred compounds of the invention include those of Formula VII
  • Ar is selected from aryl, substituted aryl, heteroaryl, or substituted heteroaryl;
  • W is O, NR P , or S(O) m ;
  • m is 0,1 or 2;
  • R s each is independently selected from halogen, -NO 2 , -CN, -R a , -OR a , - S(O) m R a , -NR a R a , -C(O)NR a R a , -C(S)NR a R a -S(O) m NR a R a , -NR a S(O) m R a , -NR a C(O)OR a , -OC(O)NR a R a , -NR a C(O)NR a R a , -NR a C(S)NR a R a , -C(O)OR a , - C(S)OR a , or -OC(O)OR a ;
  • Ri and R 2 are independently selected from halogen, -NO 2; -CN, -R a , -OR a , -S(O) m R a , -NR a R a , -C(O)NR a R a , -C(S)NR a R a -S(O) m NR a R a , -NR a S(O) m R a , - NR a C(O)OR a , -OC(O)NR a R a , -NR a C(O)NR a R a , -NR a C(S)NR a R a , -C(O)OR a , - C(S)OR a , or -OC(O)OR a ; R p each is independently selected from -R a , -S(O) m R a , -C(O)NR a R a
  • R t each is independently selected from H, halogen, -NO 2 , -NH 2 , -OH, -SH, - CN, -C(O)NH 2 , -C(O)-NHalkyl, -C(O)Nalkylalkyl, -Oalkyl, NHalkyl, Nalkylalkyl, - S(O) m alkyl, SO 2 NH 2 , SO 2 NHalkyl and SO 2 Nalkylalkyl, alkyl, cycloalkyl, haloalkyl, phenyl, benzyl, heteroaryl, or heterocycloalkyl where phenyl, benzyl heteroaryl and heterocycloalkyl may be optionally substituted with alkyl or halogen.
  • Still other preferred compounds of the invention include those of Formula VIII
  • Ar is selected from aryl, substituted aryl, heteroaryl, or substituted heteroaryl;
  • W is O, NR p , or S(O) m ;
  • m is 0,1 or 2;
  • R s each is independently selected from halogen, -NO 2; -CN, -R a , -OR a , - S(O) m R a , -NR a R a , -C(O)NR a R a , -C(S)NR a R a -S(O) m NR a R a , -NR a S(O) m R a , -NR a C(O)OR a , -OC(O)NR a R a , -NR a C(O)NR a R a , -NR a C(S)NR a R a , -C(O)OR a , - C(S)OR a , or -OC(O)OR a ;
  • R p is independently selected from -R a , -S(O) m R a , -C(O)NR a R a , -C(S)NR a R a - S(O) m NR a R a , -C(O)OR a , or -C(S)OR a ;
  • R t each is independently selected from H, halogen, -NO 2 , -NH 2 , -OH, -SH, - CN, -C(O)NH 2 , -C(O)-NHalkyl, -C(O)Nalkylalkyl, -Oalkyl, NHalkyl, Nalkylalkyl, - S(O) m alkyl, SO 2 NH 2 , SO 2 NHalkyl and SO 2 Nalkylalkyl, alkyl, cycloalkyl, haloalkyl, phenyl, benzyl, heteroaryl, or heterocycloalkyl where phenyl, benzyl heteroaryl and heterocycloalkyl may be optionally substituted with alkyl or halogen.
  • Still other preferred compounds of the invention include those of Formula DC
  • Ar is selected from aryl, substituted aryl, heteroaryl, or substituted heteroaryl; m is 0,1 or 2;
  • R t each is independently selected from H, halogen, -NO 2 , -NH , -OH, -SH, - CN, -C(O)NH 2 , -C(O)-NHalkyl, -C(O)Nalkylalkyl, -Oalkyl, NHalkyl, Nalkylalkyl, - S(O) m alkyl, SO 2 NH 2 , SO 2 NHalkyl and SO 2 Nalkylalkyl, alkyl, cycloalkyl, haloalkyl, phenyl, benzyl, heteroaryl, or heterocycloalkyl where phenyl, benzyl heteroaryl and heterocycloalkyl may be optionally substituted with alkyl or halogen.
  • Still other preferred compounds of the invention include: compounds of Formula I where X is NR3R4; compounds of Formula I where X is NR3R4 and one of R3 or R4 is aryl cycloalkyl or heteroaryl cycloalkyl; compounds of Formula I where X is NR3R4 and one of R3 or R4 is aryl cycloalkyl or heteroaryl cycloalkyl and the point of attachment is the cycloalkyl ring; compounds of Formula I where X is NR3R4 and one of R3 or R4 is aryl cycloalkyl or heteroaryl cycloalkyl and the point of attachment is the cycloalkyl ring and one of R3 or R4 is hydrogen; compounds of Formula I where X is NR3R4 and one of R3 or R4 is heterocycloalkyl and one of R3 or R4 is hydrogen; compounds of Formula I where X is NR3R4 and one of R3 or R4 is substituted ary
  • the aminopyrazine A-II can be prepared from the suitably functionalized chloropyrazine A-I (see Chart C) by reaction with the appropriate heterocyclic or carbocyclic amine in the presence of a transition metal catalyst (e.g. palladium(II) acetate or tris(dibenzylideneacetone)dipalladium(0)), base (e.g. sodium or potassium tert-butoxide) in solvents such as but not limited to toluene, DMF, or dioxane. (for example see Buchwald, S.L. et al J. Org.
  • a transition metal catalyst e.g. palladium(II) acetate or tris(dibenzylideneacetone)dipalladium(0)
  • base e.g. sodium or potassium tert-butoxide
  • solvents such as but not limited to toluene, DMF, or dioxane.
  • a variety of heterocyclic and carbocyclic amines are commercially available or can be synthesized by those skilled in the art.
  • Halogenation of A-II can be accomplished by a number of methods well-known to those skilled in the art utilizing reagents such as N-chlorosuccinimide, N-bromosuccinimide, N-iodosuccinimide, bromine, iodine, pyridinium tribromide in solvents such as dichloromethane, acetic acid, DMF, etc, to give the halopyrazine A-III.
  • Formation of the claimed compounds I is accomplished by a transition metal catalyzed coupling reaction A-III and an appropriate metalloaryl reagent such as aryl boronic acids (see for example Miyaura, N.; et al Chem. Rev. 1995, 95, 2457), aryl stannanes (see for example Mitchell, T.N. Synthesis 1992, 803), or aryl Grignards (see for example Miller, J. A. Tetrahedron Lett. 1998, 39, 7275).
  • A-I can be coupled with a suitable metalloaryl reagent as described above to provide the arylpyrazine A-IV.
  • Oxidation of the sterically less hindered nitrogen can be effected by using a variety of known oxidizing agents (eg, MCPBA, hydrogen peroxide), and the resulting N-oxide can be treated with phosphorous oxybromide to provide the bromopyrazine A-V. Reaction of the halogen with an amine as described above provides I.
  • MCPBA hydrogen peroxide
  • Chart C illustrates the preparation of mono- and dichloropyrazine A-I and B-I respectively when Rl and R2 are alkyl and the same.
  • the reaction sequence shown below follows that described in Chemical and Pharmaceutical Bulletin of Japan, 1979, 27, 2027.
  • reaction of an amine with a pyrazinyl chloride provides the desired aniline (F-I).
  • Halogenation with NBS (or other suitable reagents as described above) and standard palladium mediated coupling provides the biaryl product (F-III).
  • Alkylation with a base such as NaH and an alkyl halide affords the desired alkyl ethers (F-IV).
  • H-IV Palladium-catalyzed coupling (see, for example, Tetrahedron Lett. 1997, 38, 6363) of H-IV and H-V gives H-VI, which may be reduced by standard methods, such as catalytic hydrogenation, to give H-VII.
  • the epoxide 1-1 is prepared by treatment of the commercially available olefin (benzyl 2,5-dihydro-lH-pyrrole-l-carboxylate) with the commercially available olefin (benzyl 2,5-dihydro-lH-pyrrole-l-carboxylate) with the commercially available olefin (benzyl 2,5-dihydro-lH-pyrrole-l-carboxylate) with
  • the resultant epoxide can be opened in an asymmetric fashion with azide following the protocol of Jacobsen et al (J Org. Chem. 1997, 62, 4197) or in a racemic fashion by treatment with ammonium hydroxide. Conversion of the trans amino alcohol to the cis follows the protocol of Jacobsen et al (J Org. Chem. 1997,
  • Halogenation with NBS and standard palladium mediated coupling provides the biaryl product.
  • Alkylation with NaH and an alkyl halide or acid chloride affords the desired alkyl ethers or esters.
  • Removal of the CBZ group and treatment of the amine with chloroformates provides carbamates.
  • Treatment with an acid chloride results in the production of amides.
  • Other functionalization of the amine can be carried out by those skilled in the art.
  • the present invention provides a pharmaceutical composition
  • a pharmaceutical composition comprising a pharmaceutically acceptable carrier and a therapeutically effective amount of a compound of the invention useful for the treatment of a disorder described herein above in a mammal, particularly in a human.
  • the present invention provides a method of antagonizing a CRFi receptor in a mammal, comprising administering to the mammal a therapeutically effective amount of a compound of the invention.
  • the present invention provides a method of treating a disorder manifesting hypersecretion of CRF in a mammal, comprising administering to the animal a therapeutically effective amount of a compound of the invention.
  • the present invention provides a method for the treatment of a disorder, the treatment of which can be effected or facilitated by antagonizing CRF] receptor, in a mammal, comprising administering to the mammal a therapeutically effective of a compound of the invention.
  • the present invention provides a method of treating anxiety or depression in a mammal, particularly in a human, comprising administering to the mammal or human a therapeutically effective amount of a compound of the invention.
  • the present invention provides a method for screening for ligands for CRFj receptors, which method comprises: a) carrying out a competitive binding assay with CRFi receptors, a compound of the invention which is labelled with a detectable label, and a candidate ligand; and b) determining the ability of said candidate ligand to displace said labelled compound.
  • the present invention provides a method for detecting CRF receptors in tissue comprising: a) contacting a compound of the invention which is labelled with a detectable label, with a tissue, under conditions that permit binding of the compound to the tissue; and b) detecting the labelled compound bound to the tissue.
  • the present invention provides a method of inhibiting the binding of CRF to a CRF] receptor, comprising contacting a compound of the invention with a solution comprising cells expressing the CRFi receptor, wherein the compound is present in the solution at a concentration sufficient to inhibit the binding of CRF to the CRF ! receptor.
  • the present invention provides an article of manufacture comprising: a) a packaging material; b) a compound of the invention; and c) a label or package insert contained within said packaging material indicating that said compound is effective for treating a pre-selected disorder described herein above.
  • Compounds of the invention are useful for treating various disorders in a mammal, particularly in a human, such as social anxiety disorder; panic disorder; obsessive-compulsive disorder; anxiety with co-morbid depressive illness; affective disorder; anxiety; depression; irritable bowel syndrome; post-traumatic stress disorder; supranuclear palsy; immune suppression; gastrointestinal disease; anorexia nervosa or other feeding disorder; drug or alcohol withdrawal symptoms; substance abuse disorder (e.g., nicotine, cocaine, ethanol, opiates, or other drugs); inflammatory disorder; fertility problems; disorders the treatment of which can be effected or facilitated by antagonizing CRF, including but not limited to disorders induced or facilitated by CRF; a disorder selected from inflammatory disorders such as rheumatoid arthritis and osteoarthritis, pain, asthma, psoriasis and allergies; generalized anxiety disorder; panic, phobias, obsessive-compulsive disorder; post- traumatic stress disorder; sleep disorders induced by
  • the present invention provides a method of treating a disorder described herein above in a mammal, particularly in a human, comprising administering to the mammal or human a therapeutically effective amount of a compound of the invention.
  • disorders that can be treated by the method of the invention preferably include the following: affective disorder; anxiety; depression; irritable bowel syndrome; post-traumatic stress disorder; supranuclear palsy; obsessive- compulsive disorder; anxiety with co-morbid depressive illness; Alzheimer's disease; gastrointestinal disease; skin disorders (e.g., acne, psoriasis); anorexia nervosa; social anxiety disorder; bulimia nervosa or other feeding disorder; drug (e.g., dependencies on cocaine, heroin, benzodiazepines, nicotine or other drugs) or alcohol withdrawal symptoms; substance abuse disorder (e.g., nicotine, cocaine, ethanol, opiates, or other drugs); inflammatory disorder; disorders; the treatment of which can be effected
  • disorders that can be treated by the method of the invention more preferably include the following: generalized anxiety disorder; social anxiety disorder; anxiety; obsessive-compulsive disorder; anxiety with co-morbid depressive illness; panic disorder; mood disorders such as depression, including major depression, single episode depression, recurrent depression, child abuse induced depression, and postpartum depression; bipolar disorders; post-traumatic stress disorder; substance abuse disorder (e.g., nicotine, cocaine, ethanol, opiates, or other drugs); inflammatory disorders such as rheumatoid arthritis and osteoarthritis; gastrointestinal diseases such as irritable bowel syndrome, ulcers, Crohn's disease, spastic colon, diarrhea, and post operative ilius and colonic hypersensitivity associated by psychopathological disturbances or stress; inflammatory disorder; and skin disorders such as acne and psoriasis.
  • generalized anxiety disorder e.g., social anxiety disorder; anxiety; obsessive-compulsive disorder; anxiety with co-morbid depressive illness; panic disorder; mood disorders such
  • disorders that can be treated by the method of the invention even more preferably include the following: generalized anxiety disorder; social anxiety disorder; anxiety; obsessive-compulsive disorder; anxiety with co-morbid depressive illness; panic disorder; mood disorders such as depression, including major depression, single episode depression, recurrent depression, child abuse induced depression, and postpartum depression; bipolar disorders; and post-traumatic stress disorder.
  • a compound of this invention can be administered to treat these abnormalities in a mammal or human by means that produce contact of the active agent with the agent's site of action in the body of the mammal or human.
  • the compounds can be administered by any conventional means available for use in conjunction with pharmaceuticals either as individual therapeutic agent or in combination of therapeutic agents. It can be administered alone, but will generally be administered with a pharmaceutical carrier selected on the basis of the chosen route of administration and standard pharmaceutical practice.
  • the dosage administered will vary depending on the use and known factors such as pharmacodynamic character of the particular agent, and its mode and route of administration; the recipient's age, weight, and health; nature and extent of symptoms; kind of concurrent treatment; frequency of treatment; and desired effect.
  • a compound of this invention can be orally administered at a dosage of the active ingredient of 0.002 to 200 mg/kg of body weight.
  • a dose of 0.01 to 10 mg/kg in divided doses one to four times a day, or in sustained release formulation will be effective in obtaining the desired pharmacological effect.
  • Dosage forms (compositions) suitable for administration contain from about 1 mg to about 100 mg of active ingredient per unit.
  • the active ingredient will ordinarily be present in an amount of about 0.5 to 95% by weight based on the total weight of the composition.
  • the active ingredient can be administered orally in solid dosage forms, such as capsules, tablets and powders; or in liquid forms such as elixirs, syrups, and/or suspensions.
  • the compounds of this invention can also be administered parenterally in sterile liquid dose formulations.
  • Gelatin capsules can be used to contain the active ingredient and a suitable carrier such as but not limited to lactose, starch, magnesium stearate, steric acid, or cellulose derivatives. Similar diluents can be used to make compressed tablets. Both tablets and capsules can be manufactured as sustained release products to provide for continuous release of medication over a period of time.
  • Compressed tablets can be sugar coated or film-coated to mask any unpleasant taste, or used to protect the active ingredients from the atmosphere, or to allow selective disintegration of the tablet in the gastrointestinal tract.
  • Liquid dose forms for oral administration can contain coloring or flavoring agents to increase patient acceptance.
  • water, pharmaceutically acceptable oils, saline, aqueous dextrose (glucose), and related sugar solutions and glycols, such as propylene glycol or polyethylene glycol are suitable carriers for parenteral solutions. Solutions for parenteral administration preferably contain a water soluble salt of the active ingredient, suitable stabilizing agents, and if necessary, butter substances.
  • Antioxidizing agents such as sodium bisulfite, sodium sulfite, or ascorbic acid, either alone or in combination, are suitable stabilizing agents. Also used are citric acid and its salts, and EDTA. In addition, parenteral solutions can contain preservatives such as benzalkonium chloride, methyl- or propyl-paraben, and chlorobutanol. Suitable pharmaceutical carriers are described in "Remington's Pharmaceutical Sciences", A. Osol, a standard reference in the field.
  • Capsules A large number of units capsules are prepared by filling standard two-piece hard gelatin capsules each with 100 mg of powdered active ingredient, 150 mg lactose, 50 mg cellulose, and 6 mg magnesium stearate.
  • Soft Gelatin Capsules A mixture of active ingredient in a digestible oil such as soybean, cottonseed oil, or olive oil is prepared and injected by means of a positive displacement was pumped into gelatin to form soft gelatin capsules containing 100 mg of the active ingredient. The capsules were washed and dried.
  • Tablets A digestible oil such as soybean, cottonseed oil, or olive oil is prepared and injected by means of a positive displacement was pumped into gelatin to form soft gelatin capsules containing 100 mg of the active ingredient. The capsules were washed and dried.
  • a large number of tablets are prepared by conventional procedures so that the dosage unit was 100 mg active ingredient, 0.2 mg of colloidal silicon dioxide, 5 mg of magnesium stearate, 275 mg of microcrystalline cellulose, 11 mg of starch, and 98.8 mg lactose.
  • Appropriate coatings may be applied to increase palatability or delayed adsorption.
  • the compounds of this invention may also be used as reagents or standards in the biochemical study of neurological function, dysfunction, and disease.
  • substituted aryl means an aryl group optionally substituted with 1 - 5 substituents independently selected from halogen, -NO 2; -CN, -R a , -OR a , -S(O) m R a , - NR a R a , -C(O)NR a R a , -C(S)NR a R a -S(O) m NR a R a , -NR a S(O) m R a , -NR a C(O)OR a , - OC(O)NR a R a , -NR a C(O)NR a R a , -NR a C(S)NR a R a , -C(O)OR a , and - OC(O)ORa;
  • aryl cycloalkyl means a bicyclic ring system containing 8 to 14 carbon atoms wherein one ring is aryl and the other ring is fused to the aryl ring and may be fully or partially saturated in the portion of the ring fused to the aryl ring, provided that either ring may act as a point of attachment;
  • substituted aryl cycloalkyl means an aryl cycloalkyl group having 1-5 substituents independently selected from halogen, -NO 2) -CN, -R a , -OR a , - S(O) m R a , -NRaRa, -C(O)NR a R a , -C(S)NR a R a -S(O) m NR a R a , -NR a S(O) m R a , -NR a C(O)OR a , -OC(O)NR a R a , -NR a C(O)NR a R a , -NR a C(S)NR a R a , -C(O)OR a , and -OC(O)OR a ;
  • heteroaryl cycloalkyl means a bicyclic ring system containing 8 to 14 atoms, wherein one ring is heteroaryl and the other ring is fused to the heteroaryl ring and may be fully or partially saturated in the portion of the ring fused to the heteroaryl ring, provided that either ring may act as a point of attachment;
  • substituted heteroaryl cycloalkyl means a heteroaryl cycloalkyl group having 1-5 substituents independently selected from halogen, -NO 2> -CN, -R a , - OR a , -S(O) m R a , -NR a R a , -C(O)NR a R a , -C(S)NR a R a -S(O) ra NR a R a , -NR a S(O) m R a , - NR a C(O)
  • substituted aryl heterocycloalkyl means an aryl heterocycloalkyl group having 1-5 substituents independently selected from halogen, -NO 2> -CN, -R a , - OR a , -S(O) m R a , -NRaRa, -C(O)NR a R a , -C(S)NR a R a -S(O) m NR a R a , -NR a S(O) m R a , - NR a C(O)OR a , -OC(O)NR a R a , -NR a C(O)NR a R a , -NR a C(S)NR a R a , -C(O)OR a , and -OC(O)OR a ;
  • heteroaryl heterocycloalkyl means an aryl heterocycloalkyl group having 1-5 substituents independently
  • substituted heteroaryl heterocycloalkyl means an heteroaryl heterocycloalkyl group having 1-5 substituents independently selected from halogen, - NO 2) -CN, -R a , -OR a , -S(O) m R a , -NR a R a , -C(O)NR a R a , -C(S)NR a R a -S(O) m NR a R a , - NR a S(O) m R a , -NR a C(O)OR a , -OC(O)NR a R a , -NR a C(O)NR a R a , -NR a C(S)NR a R a , -C(S)OR a , and -OC(O)OR a ;
  • heteroaryl means a radical attached via a ring carbon or nitrogen atom of a monocyclic aromatic ring containing five or six ring atoms consisting of carbon and 1, 2, 3, or 4 heteroatoms each selected from the group consisting of non- peroxide O, S, N, with appropriate bonding to satisfy valence requirements as well as a radical (attachment at either carbon or nitrogen) of a fused bicyclic heteroaromatic of about eight to ten ring atoms, and includes radicals such as thienyl, benzothienyl, pyridyl, thiazolyl, quinolyl, pyrazinyl, pyrimidyl, imidazolyl, furanyl, benzofuranyl, benzothiazolyl, isothiazolyl, benzisothiazolyl, benzisoxazolyl, benzimidazolyl, indolyl, and benzoxazolyl, pyrazolyl, triazolyl
  • heterocycloalkyl means a 4 to 8 membered monocyclic ring or bicyclic ring, wherein at least one carbon atom is replaced with a heteromember selected from oxygen, nitrogen, -NH-, or -S(O) m - wherein m is zero, 1, or 2, optionally containing from one to three double bonds, provided that the molecule is not aromatic; and provided that ring attachment can occur at either a carbon or nitrogen atom;
  • Heterocycloalkyl includes tetrahydrofuranyl, tetrahydropyranyl, morpholinyl, pyrrolidinyl, piperidinyl, piperazinyl, [2.2.1]- azabicyclic rings, [2.2.2]-azabicyclic rings, [3.3.1]-azabicyclic rings, quinuclidinyl, azetidinyl, azetidinonyl, oxindolyl, dihydroimidazo
  • substituted heterocycloalkyl is a heterocycloalkyl group having 1 -5 substituents independently selected from halogen, -NO 2 , -CN, -R a , -OR a , -S(O) m R a , - NR a R a , -C(O)NR a R a , -C(S)NR a R a -S(O) m NR a R a , -NR a S(O) m R a , -NR a C(O)OR a , - OC(O)NR a R a , -NR a C(O)NR a R a , -NR a C(S)NR a R a , -C(O)OR a , and - OC(O)OR a ;
  • Halogen is a group selected from -F, -Cl, -Br, and -I;
  • alkyl means both straight and branched chain moieties having from 1-10 carbon atoms optionally containing one or more double or triple bonds;
  • cycloalkyl means a monocyclic or bicyclic alkyl moiety, having from 3-10 carbon atoms optionally containing 1 to 2 double bonds provided that the moiety is not aromatic;
  • haloalkyl means an alkyl moiety having from 1-10 carbon atoms and having 1 to (2v+l) independently selected halogen substituent(s) where v is the number of carbon atoms in the moiety;
  • pharmaceutically acceptable salt refers to a salt prepared from pharmaceutically acceptable non- toxic acids, including inorganic acids and organic acids.
  • Suitable non- toxic acids include inorganic and organic acids of basic residues such as amines, for example, acetic, benzenesulfonic, benzoic, amphorsulfonic, citric, ethenesulfonic, fumaric, gluconic, glutamic, hydrobromic, hydrochloric, isethionic, lactic, maleic, malic, mandelic, methanesulfonic, mucic, nitric, pamoic, pantothenic, phosphoric, succinic, sulfuric, barbaric acid, p-toluenesulfonic and the like; and alkali or organic salts of acidic residues such as carboxylic acids, for example, alkali and alkaline earth metal salts derived from the following bases: sodium hydride, sodium hydroxide, potassium hydroxide, calcium hydroxide, aluminum
  • compositions of the compounds of the invention can be prepared by reacting the free acid or base forms of these compounds with a stoichiometric amount of the appropriate base or acid in water or in an organic solvent, or in a mixture of the two; generally, nonaqueous media like ether, ethyl acetate, ethanol, isopropanol, or acetonitrile are preferred. Lists of suitable salts are found in Remin ton's Pharmaceutical Sciences, 17th ea., Mack Publishing Company, Easton, PA, 1985, p. 1418, the disclosure of which is hereby incorporated by reference.
  • prodrug as used herein means any covalently bonded carrier which releases the active parent drug of Formula I in vivo when such prodrug is administered to a mammalian subject.
  • Prodrugs of the compounds of Formula I are, within the scope of sound medical judgment, suitable for use in contact with the tissues of humans and lower animals with undue toxicity, irritation, allergic response, and the like, commensurate with a reasonable benefit/risk ratio, and effective for their intended use, as well as the zwitterionic forms, where possible, of the compounds of the invention.
  • prodrug means compounds that are rapidly transformed in viva to yield the parent compound of formula I, for example by hydrolysis in blood.
  • Functional groups which may be rapidly transformed, by metabolic cleavage, in viva form a class of groups reactive with the carboxyl group of the compounds of this invention. They include, but are not limited to such groups as alkanoyl (such as acetyl, propionyl, butyryl, and the like), unsubstituted and substituted aroyl (such as benzoyl and substituted benzoyl), alkoxycarbonyl (such as ethoxycarbonyl), trialkylsilyl (such as trimethyl- and triethysilyl), monoesters formed with dicarboxylic acids (such as succinyl), and the like.
  • alkanoyl such as acetyl, propionyl, butyryl, and the like
  • unsubstituted and substituted aroyl such as benzoyl and substituted benzoyl
  • alkoxycarbonyl such as ethoxycarbonyl
  • trialkylsilyl such as trimethyl- and trie
  • the compounds bearing such groups act as pro-drugs.
  • the compounds bearing the metabolically cleavable groups have the advantage that they may exhibit improved bioavailability as a result of enhanced solubility and/or rate of absorption conferred upon the parent compound by virtue of the presence of the metabolically cleavable group.
  • prodrugs A thorough discussion of prodrugs is provided in the following: Design of Prodrugs, H. Bundgaard, ea., Elsevier, 1985; Methods in Enzymology, K.
  • Prodrugs are considered to be any covalently bonded carriers which release the active parent drug of Formula I in vivo when such prodrug is administered to a mammalian subject.
  • Prodrugs of the compounds of Formula I are prepared by modifying functional groups present in the compounds in such a way that the modifications are cleaved, either in routine manipulation or in vivo, to the parent compounds.
  • Prodrugs include compounds wherein hydroxy, amine, or sulfhydryl groups are bonded to any group that, when administered to a mammalian subject, cleaves to form a free hydroxyl, amino, or sulfhydryl group, respectively.
  • Examples of Prodrugs include, but are not limited to, acetate, formate and benzoate derivatives of alcohol and amine functional groups in the compounds of Formula I, and the like.
  • terapéuticaally effective amount of a compound of this invention means an amount effective to antagonize abnormal level of CRF or treat the symptoms of affective disorder, anxiety, depression, or other disorders described herein above, in a host.
  • compound of the invention means a compound of Formula I, a stereoisomer thereof, a pharmaceutically acceptable salt thereof, or a prodrug thereof.
  • rat frontal cortex is homogenized in 10 mL of ice cold tissue buffer (50 mM HEPES buffer pH 7.0, containing 10 mM MgCl 2 , 2 mM EGTA, 1 //g/ml aprotinin, 1 //g/ml leupeptin and 1 / g/ml pepstatin).
  • the homogenate is centrifuged at 48,000 x g for 10 min. and the resulting pellet rehomogenized in 10 mL of tissue buffer. Following an additional centrifugation at 48,000 x g for 10 min., the pellet is resuspended to a protein concentration of 300//g/mL.
  • Binding assays are performed in 96 well plates at a final volume of 300 ⁇ L. The assays are initiated by the addition of 150 ⁇ L membrane suspension to 150 ⁇ L of assay buffer containing 125 I-ovine-CRF (final concentration 150 pM) and various concentrations of inhibitors.
  • the assay buffer is the same as described above for membrane preparation with the addition of 0.1% ovalbumin and 0.15 mM bacitracin.
  • Radioligand binding is terminated after 2 hours at room temperature by filtration through Packard GF/C unifilter plates (presoaked with 0.3% polyethyleneimine) using a Packard cell harvestor.
  • Filters are washed three times with ice cold phosphate buffered saline pH 7.0 containing 0.01% Triton X-100. Filters are assessed for radioactivity in a Packard TopCount. Nonspecific binding is determined in the presence of excess (10 ⁇ M) ⁇ -helical CRF.
  • tissues and cells that naturally express CRF receptors such as IMR-32 human neuroblastoma cells (ATCC; Hogg et al., 1996), can be employed in binding assays analogous to those described above.
  • IC 50 values are calculated using standard methods known in the art, such as with the non-linear curve fitting program RS/1 (BBN Software Products Corp., Cambridge, MA).
  • a compound is considered to be active if it has an IC 0 value of less than about 10 micromolar ( ⁇ M) for the inhibition of CRFi receptors.
  • the binding affinity of the compounds of Formula I expressed as IC 50 values generally ranges from about 0.5 nanomolar to about 10 micromolar.
  • Prefened compounds of Formula I exhibit ICso of 1 micromolar or less, more preferred compounds of Formula I exhibit IC 50 of less than 100 nanomolar or less, still more prefened compounds of Formula I exhibit IC 50 of less than 10 nanomolar or less.
  • CRF-stimulated adenylate cyclase activity can be performed as previously described [G. Battaglia et al, Synapse 1 :572 (1987)]. Briefly, assays are carried out at 37 °C for 10 min in 200 mL of buffer containing 100 mM Tris-HCl (pH 7.4 at 37 °C), 10 mM MgCl 2 , 0.4 mM EGTA, 0.1% BSA, 1 mM isobutylmethylxanthine (IBMX), 250 units/mL phosphocreatine kinase, 5 mM creatine phosphate, 100 mM guanosine 5'-triphosphate, 100 nM o-CRF, antagonist peptides (various concentrations) and 0.8 mg original wet weight tissue (approximately 40-60 mg protein).
  • Reactions are initiated by the addition of 1 mM ATP/[ 32 P] ATP (approximately 2-4 mCi/tube) and terminated by the addition of 100 mL of 50 mM Tris-HCl, 45 mM ATP and 2% sodium dodecyl sulfate.
  • 1 mL of [ 3 H]cAMP (approximately 40,000 dpm) is added to each tube prior to separation.
  • the separation of [ 32 P]cAMP from [ 32 P] ATP is performed by sequential elution over Dowex and alumina columns.
  • adenylate cyclase activity can be assessed in a 96-well format utilizing the Adenylyl Cyclase Activation FlashPlate Assay from NEN Life Sciences according to the protocols provided. Briefly, a fixed amount of radiolabeled cAMP is added to 96-well plates that are precoated with anti-cyclic AMP antibody. Cells or tissues are added and stimulated in the presence or absence of inhibitors. Unlabeled cAMP produced by the cells will displace the radiolabeled cAMP from the antibody. The bound radiolabeled cAMP produces a light signal that can be detected using a microplate scintillation counter such as the Packard TopCount. increasing amounts of unlabeled cAMP results in a decrease of detectable signal over a set incubation time (2-24 hours).
  • Example 5 and 6 Preparation of 5-(2,4-dichlorophenyl)-3,6-diethyl-N-[(lS,2S)-2-methoxy-2,3-dihydro- lH-inden-l-yl]pyrazin-2-amine and 5-(2,4-dichlorophenyl)-3,6-diethyl-N-[(lS,2S)-2- methoxy-2,3-dihydro-lH-inden-l-yl]-N-methylpyrazin-2-amine.

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Abstract

L'invention concerne des dérivés d'aryle-1,4-pyrazine substitués ainsi que leur utilisation dans le traitement des troubles de l'anxiété, de la dépression et des troubles associés au stress.
PCT/US2002/033642 2001-11-21 2002-11-15 Derives d'aryle-1,4-pyrazine substitues WO2003045924A1 (fr)

Priority Applications (8)

Application Number Priority Date Filing Date Title
MXPA04004714A MXPA04004714A (es) 2001-11-21 2002-11-15 Derivados de aril 1,4-pirazina sustituidos.
AU2002343557A AU2002343557A1 (en) 2001-11-21 2002-11-15 Substituted aryl 1,4-pyrazine derivatives
DE60234269T DE60234269D1 (de) 2001-11-21 2002-11-15 Substituierte aryl 1,4-pyrazin derivate
DK02780507T DK1446387T3 (da) 2001-11-21 2002-11-15 Substituerede aryl, 1,4-pyrazinderivater
AT02780507T ATE447561T1 (de) 2001-11-21 2002-11-15 Substituierte aryl 1,4-pyrazin derivate
CA002467870A CA2467870A1 (fr) 2001-11-21 2002-11-15 Derives d'aryle-1,4-pyrazine substitues
BR0214309-7A BR0214309A (pt) 2001-11-21 2002-11-15 Derivados aril-1,4-pirazina substituìdos
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EP1446387A1 (fr) 2004-08-18
BR0214309A (pt) 2004-10-13
DE60234269D1 (de) 2009-12-17
ATE447561T1 (de) 2009-11-15
DK1446387T3 (da) 2009-12-21
MXPA04004714A (es) 2004-08-19
PT1446387E (pt) 2009-12-21
ES2333586T3 (es) 2010-02-24
CA2467870A1 (fr) 2003-06-05
AU2002343557A1 (en) 2003-06-10

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